Malicious PDF — malware analysis report

Static analysis result for SHA-256 8953eebae9024d41…

MALICIOUS

PDF

43.2 KB Created: 2021-05-15 03:39:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 91186fa7e9be43a34eec02f4d087b7bd SHA-1: 7c245896d5c36eea9510fd896778a95ba6dcab86 SHA-256: 8953eebae9024d41464c2cda0410aa1bae11d1c883476dc4197a6335a3fa1936
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors and sites offering free game currency or hacks, such as 'how-to-get-free-robux-without-any-verification-game-hack'. The presence of these links, combined with the ML classifier flagging it as malicious, strongly suggests a phishing or malware distribution attempt. No scripts were extracted, but the document's structure and embedded URLs indicate a lure for initial access, likely via spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.xyz/app/431946152/how-to-get-free-robux-without-any-verification-game-hack In PDF document text
    • https://liftkos.com/images/op-rewards-free-robux_GM431946152.pdfIn PDF document text
    • https://liftkos.com/images/how-to-get-free-robux-website_GM431946152.pdfIn PDF document text
    • https://liftkos.com/images/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://liftkos.com/images/www-free-robux-com_GM431946152.pdfIn PDF document text
    • https://liftkos.com/images/real-working-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://liftkos.com/images/how-to-make-a-free-minecraft-account_GM479516143.pdfIn PDF document text
    • https://liftkos.com/images/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://liftkos.com/images/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • https://liftkos.com/images/get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://liftkos.com/images/coin-master-free-coins-and-spins-group_GM406889139.pdfIn PDF document text
    • https://liftkos.com/images/minecraft-games-to-play-for-free_GM479516143.pdfIn PDF document text
    • https://liftkos.com/images/114-4-hacks_GM479516143.pdfIn PDF document text
    • https://liftkos.com/images/mcpe-master-unlimited-coins-hack-apk_GM406889139.pdfIn PDF document text
    • https://liftkos.com/images/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://liftkos.com/images/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://liftkos.com/images/roblox-hacks-and-cheats_GM431946152.pdfIn PDF document text
    • https://liftkos.com/images/how-to-hack-roblox-games_GM431946152.pdfIn PDF document text
    • https://liftkos.com/images/coin-master-hack-2021-free_GM406889139.pdfIn PDF document text
    • https://liftkos.com/images/how-to-get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://liftkos.com/images/coin-master-hacks-no-verification_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004701.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4701 26388 bytes
SHA-256: 7bb0b5efc822421692c08977bfe58c45fdf52fc893f62e835a09ee0a0f385fe5
font_01_sfnt_off00008389.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8389 19308 bytes
SHA-256: 301178d570ed694c8643ac68529098fd95120b57f2db1b64df12e7fbf37d492f